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Finding the Fourth Proportional to 77,416.80, 106,832.16 and 43,882.08

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Solution

The fourth proportional to 77,416.80, 106,832.16 and 43,882.08 is: 60,555.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,416.80 : 106,832.16 = 43,882.08 : x
  2. Step 2: Convert to fraction form
    77,416.80/106,832.16 = 43,882.08/x
  3. Step 3: Cross multiply
    77,416.80x = 106,832.16 × 43,882.08
  4. Step 4: Simplify right side
    77,416.80x = 4,688,017,391.69
  5. Step 5: Solve for x
    x = 4,688,017,391.69/77,416.80
  6. Step 6: Final answer
    x = 60,555.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.